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From: dfrank@cod.nosc.mil (David A. Frank)
Newsgroups: comp.sys.sun
Subject: TCP timing
Keywords: Networks
Message-ID: <1990Aug13.005940.3918@rice.edu>
Date: 9 Aug 90 00:47:54 GMT
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Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
Originator: spots@titan.rice.edu
X-Sun-Spots-Digest: Volume 9, Issue 293, message 9

I'm running SunOS 4.0 and 4.1, and would like to modify TCP for use on a
token-ring with inherently high end-to-end delay, often, on the order of
ten seconds. The token ring is accessed through a gateway that cannot
provide any flow control or timing services.

I'm using sendmail, and I'd like to raise the TCP retransmit interval to
accomodate this network. I can't, however, identify such a parameter in
<tcp_timer.h>.

Furthermore, even though the kernel includes <tcp_timer.h>, I'm not
certain that recompiling the kernel will help me in changing the
retransmission interval that sendmail uses.

Any guidance about how to accomplish this is appreciated. Please send
responses to :

David Frank

DDN: dfrank@nosc.mil
UUCP: {ihnp4,akgua,decvax,dcdwest,ucbvax}!sdcsvax!nosc!dfrank